The VideoLAN Forums

Posted: **22 Aug 2014 06:43**

I am trying to get a 2x2 grid of identical brand webcams to display using mosaic but I'm not having any luck. I'm hoping someone here can help me out.

What I see when I run the command is two windows open. One is the console window and the other is a VLC gui window with no video playing (showing the default logo on black background).

During this time the first of the 4 webcam's activity LED starts blinking, then after a few seconds all 4 webcam LEDs start blinking then go solid after a couple more seconds. Eventually the mosaic video never plays then the console and gui windows close themselves. Next time I start VLC it says that it crashed and asks me to send feedback (which I do).

Any help is appreciated. I am not a VLC expert but I have poured over the many forum posts about it that are applicable to version 2+ (no more "fake" so a lot of older examples are obsolete).

I am using Windows 7 64 bit and version 2.1.5 of VLC.

Log:
http://pastebin.com/8GDAbanX

Command:

Code: Select all

vlc -vvv  --width=640 --height=480 --no-video-deco --no-embedded-video --vlm-conf=mosaic.vlm --mosaic-width=640 --mosaic-height=480 --mosaic-rows=2 --mosaic-cols=2 --mosaic-position=1 --mosaic-order="1,2,3,4" --video-on-top --file-logging --logfile=vlc-log.txt --verbose=2

VLM:

Code: Select all

# VLC media player VLM command batch
# http://www.videolan.org/vlc/

new ch1 broadcast enabled
setup ch1 input "dshow://"
setup ch1 option dshow-vdev="USB Camera"
setup ch1 option dshow-size="320x240"
setup ch1 option image-fps=25/1
setup ch1 option image-duration=-1
setup ch1 output #duplicate{dst=mosaic-bridge{id=ch1,width=320,height=240},select=video,dst=bridge-out{id=1}}

new ch2 broadcast enabled
setup ch2 input "dshow://"
setup ch2 option dshow-vdev="USB Camera #1"
setup ch2 option dshow-size="320x240"
setup ch2 option image-fps=25/1
setup ch2 option image-duration=-1
setup ch2 output #duplicate{dst=mosaic-bridge{id=ch2,width=320,height=240},select=video,dst=bridge-out{id=2}}

new ch3 broadcast enabled
setup ch3 input "dshow://"
setup ch3 option dshow-vdev="USB Camera #2"
setup ch3 option dshow-size="320x240"
setup ch3 option image-fps=25/1
setup ch3 option image-duration=-1
setup ch3 output #duplicate{dst=mosaic-bridge{id=ch3,width=320,height=240},select=video,dst=bridge-out{id=3}}

new ch4 broadcast enabled
setup ch4 input "dshow://"
setup ch4 option dshow-vdev="USB Camera #3"
setup ch4 option dshow-size="320x240"
setup ch4 option image-fps=25/1
setup ch4 option image-duration=-1
setup ch4 output #duplicate{dst=mosaic-bridge{id=ch4,width=320,height=240},select=video,dst=bridge-out{id=4}}

control ch1 play
control ch2 play
control ch3 play
control ch4 play

Posted: **22 Aug 2014 09:51**

Please share your logs

Posted: **23 Aug 2014 03:04**

I included the debug log as a link to pastebin. is there another log i should include instead?

Posted: **11 May 2015 15:59**

Hi all,

I am using VLC 2.2.1 and tried to use VLC but i am not seeing any grid. Instead one big window opens and i do not see any video playing.
I don't see any error message and also i verified that video decoder is working fine but i do not see any video being played.
I have tried changing the version to 2.1.5 also and found no difference.
Can anyone help me understand i have made any mistake. My vlc script is below:

VLM SCRIPT
*************
new bg broadcast enabled loop
setup bg input E:\hevc_decoder\current_working\vlc-plugins\VLM\neoncaster_screen_saver_9.jpg
setup bg option sub-filter=mosaic
setup bg output #bridge-in{offset=640,360}:display
# Mosaic options
setup bg option mosaic-alpha=255
setup bg option mosaic-height=720
setup bg option mosaic-width=1280
setup bg option mosaic-align=5
setup bg option mosaic-xoffset=0
setup bg option mosaic-yoffset=0
setup bg option mosaic-vborder=0
setup bg option mosaic-hborder=0
setup bg option mosaic-position=2
setup bg option mosaic-rows=1
setup bg option mosaic-cols=2
setup bg option mosaic-order=I11,I12
setup bg option mosaic-delay=0

setup bg option mosaic-offsets=0,0,640,360

# Input options
new I11 broadcast enabled loop
setup I11 input E:\hevc_decoder\streams\8bit_streams\BasketballDrive_1920x1080_50_qp32.ts
setup I11 option file-caching=300
setup I11 output #duplicate{dst=mosaic-bridge{id=I11,width=640,height=360},select=video,dst=bridge-out{id=0},select=audio}

new I12 broadcast enabled loop
setup I12 input E:\hevc_decoder\streams\8bit_streams\BasketballDrive_1920x1080_50_qp32.ts
setup I12 option file-caching=300
setup I12 option sub-filter=mosaic
setup I12 output #duplicate{dst=mosaic-bridge{id=I12,height=640,width=360},select=video,dst=bridge-out{id=1},select=audio}

# Launch everything
control bg play
control I11 play
control I12 play

Command i use for launching VLC:
****************************************
vlc.exe -vvv --vlm-conf=vlm_script.vlm --logfile=E:\temp\vlc_log.txt --verbose=2

Any help will be appreciated.
Please HELP.

Thanks and Regards,
rrp1990

The VideoLAN Forums

Mosaic Not Displaying (win7-64 vlc-2.1.5)

Mosaic Not Displaying (win7-64 vlc-2.1.5)

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Re: Mosaic Not Displaying (win7-64 vlc-2.1.5)

Re: Mosaic Not Displaying (win7-64 vlc-2.1.5)